173 patents
Utility
Catalytic conversion process and system for producing gasoline and propylene
16 Jan 24
A catalytic conversion process for producing gasoline and propylene includes the steps of 1) subjecting a feedstock oil to a first catalytic conversion reaction in a first catalytic conversion reaction device to obtain a first reaction product; 2) separating the first reaction product to obtain a propylene fraction, a gasoline fraction and a fraction comprising C4 olefin; 3) carrying out an oligomerization reaction on the fraction comprising C4 olefin in an oligomerization reactor to obtain an oligomerization product comprising C12 olefin, and optionally separating the oligomerization product to obtain a fraction comprising C12 olefin; 4) recycling the C12 olefin-containing oligomerization product or fraction to the first catalytic conversion reaction device, and/or sending the C12 olefin-containing oligomerization product or fraction to a second catalytic conversion reaction device for a second catalytic conversion reaction to obtain a second reaction product comprising propylene.
Xuhui Bai, Yanfen Zuo, Youhao Xu, Yibin Luo, Xingtian Shu, Xieqing Wang, Xin Wang
Filed: 17 Mar 20
Utility
Process for producing p-xylene and ethylbenzene from C
19 Dec 23
A process for producing para-xylene and ethylbenzene from C8 aromatics containing ethylbenzene includes the steps of sending C8 aromatics containing ethylbenzene to an ethylbenzene liquid-phase adsorption separation device, wherein a suction liquid containing ethylbenzene and a suction residual liquid are obtained after the adsorption separation, and the desorbents in the suction liquid and the suction residual liquid are removed to obtain ethylbenzene and a suction residual oil; sending the suction residual oil to a para-xylene adsorption separation device, and unadsorbed components are discharged as a raffinate from the adsorbent bed; the adsorbent bed is rinsed with a desorbent to desorb the para-xylene therein and obtain an extract; the desorbents in the extract and the raffinate are respectively removed to obtain para-xylene and a raffinate oil; sending the raffinate oil to a xylene isomerization device to carry out xylene isomerization, and the isomerization product is fractionated.
Yanqiang Yang, Dehua Wang, Huiguo Wang, Jianfeng Ma, Hongchao Wang, Ben Li, Yusi Liu, Xiaofei Qiao, Ningning Gao
Filed: 28 Sep 20
Utility
Interconnect for downhole instruments
19 Dec 23
An interconnector for connecting downhole instruments includes a male connector assembly and a female connector assembly.
Sheng Zhan, Sam Seldon
Filed: 16 May 22
Utility
Catalyst system for olefin polymerization and use thereof
12 Dec 23
Jie Lin, Xiaofan Zhang, Ting Huang, Junhui Zhang, Junling Zhou, Zhufang Sun, Xianzhi Xia, Hui Zhao, Zifang Guo, Jin Zhao, Haitao Liu, Meiyan Fu, Jigui Zhang, Lin Qi, Lian Yan, Wei Cen, Yu Wang
Filed: 24 Jul 20
Utility
Halogen-containing compound and use thereof as catalyst ligand in ethylene oligomerization
28 Nov 23
A halogen-containing compound represented by a formula I and a use thereof as a ligand of an ethylene oligomerization catalyst composition, an ethylene oligomerization catalyst composition comprising the halogen-containing compound, and an ethylene oligomerization method, ethylene trimerization method and ethylene tetramerization method using the catalyst composition are provided.
Hongfei Wu, Mingfang Zheng, Songshuang Hu, Tonglin Li, Jun Liu, Ke Xu, Xiaoqing Wang, Feng Pan
Filed: 30 Oct 19
Utility
Aluminophosphate molecular sieve SCM-18, its preparation and application thereof
21 Nov 23
An aluminophosphate molecular sieve SCM-18 has a schematic chemical composition, expressed on a molar basis, of Al2O3.n P2O5, in which n represents a phosphorus to aluminum molar ratio, and is in a range of about 0.8-1.2.
Weimin Yang, Zhiqing Yuan, Jiawei Teng, Wenhua Fu, Songlin Liu
Filed: 19 Sep 19
Utility
Apparatus and method for treating waste water containing ammonium salts
21 Nov 23
In a method for treating waste water containing ammonium salts, sodium sulfate crystal is obtained by freezing crystallization, then the pH value of the waste water is adjusted to a specific range, and next sodium chloride crystal and ammonia water is obtained by evaporation.
Xiping Yin, Ye Li, Songyuan Gu, Zhijian Liu, Tao Wang, Jin'ai Gao, Yuhua Chen, Yan Zhou, Ling Yang, Zhiwei Yuan, Hongliang Yi, Tao An, Fuzu Liu, Zhimin Zhang, Shupeng Xu, Hongqi Guo
Filed: 29 Sep 20
Utility
Reactive torque automatic balancing device for screw drilling tool, drilling string, and method
14 Nov 23
A reactive torque automatic balancing device for a screw drilling tool includes an upper joint (1); a core cylinder (9) having an inner chamber in communication with the screw drilling tool (305) located downstream, so that drilling fluid from the inner chamber of the upper joint (1) flows to the screw drilling tool (305) through the inner chamber of the core cylinder (9) to allow the screw drilling tool to perform drilling; a lower joint (16) fixedly arranged at a lower end of the core cylinder (9); and an automatic balancing assembly, which is arranged between an outer wall of the core cylinder (9) and an inner wall of the upper joint (1), and driven by hydraulic pressure generated by a part of the drilling fluid flowing through the inner chamber of the upper joint (1).
Deshuai Zheng, Menggang Li, Chengcheng Niu, Xiangyang Zhao, Lingling Yu
Filed: 15 Apr 20
Utility
Silicoaluminophosphate molecular sieve, its preparation and application thereof
7 Nov 23
A novel silicoaluminophosphate molecular sieve has a schematic chemical composition, expressed on a molar basis, of mSiO2·Al2O3·nP2O5, in which m represents the molar ratio of SiO2 to Al2O3 and is in a range of about 0.005-0.15, and n represents the molar ratio of P2O5 to Al2O3 and is in a range of about 0.7-1.1.
Weimin Yang, Zhiqing Yuan, Jiawei Teng, Wenhua Fu, Songlin Liu
Filed: 19 Sep 19
Utility
Phenol derivative, and preparation process and use thereof
17 Oct 23
Xiaowei Chen, Kecheng Wei, Yuxiang Liang
Filed: 16 Oct 19
Utility
Acrylamide copolymer and preparation method therefor and use thereof
17 Oct 23
Fangyuan Zhao, Zhuo Yi, Xiaochun Wang, Jie Yang
Filed: 17 Dec 19
Utility
Hydrocracking catalyst, preparation method therefor and application thereof
10 Oct 23
Disclosed is a hydrocracking catalyst, a preparation method and an application thereof.
Zhaoji Tang, Yanze Du, Hongfei Fan, Jifeng Wang, Zhengmin Yu, Xiaoyan Sun
Filed: 12 Dec 19
Utility
Method and system for producing epoxyalkane
3 Oct 23
A method for producing an epoxyalkane includes the step of separating a stream containing an epoxyalkane and an extracting agent in a separation column having a column kettle reboiler.
Song Hu, Shuai Hu, Weisheng Yang
Filed: 30 Nov 18
Utility
Process for making phenol and xylenes
26 Sep 23
Processes for making phenol and xylenes from a phenols-containing feed are described.
Shuguang Zhang, Lubo Zhou
Filed: 4 Feb 19
Utility
Process for separating alkylation product, alkylation reaction and separation process, and related apparatus
19 Sep 23
A liquid phase alkylation product from an alkylation reaction unit is introduced into a first heat-exchanger directly or after being pressurized with a pressure pump and heat-exchanged with a vapor phase stream from the column top of a high-pressure fractionating column n, then introduced into a second heat-exchanger and further heated to 100° C.-150° C., then introduced into the high-pressure fractionating column and subjected to fractionation at 2.0 MPa-4.0 MPa, the vapor phase stream from the column top of the high-pressure fractionating column is heat-exchanged with the liquid phase alkylation product to be separated, a liquid phase stream from the column bottom of the high-pressure fractionating column is introduced into a low-pressure fractionating column and subjected to fractionation under at 0.2 MPa-1.0 MPa, a low-carbon alkane is obtained from the column top of the low-pressure fractionating column n, and a liquid phase stream obtained from the column bottom of the low-pressure fractionating column is an alkylation oil product.
Qing Yuan, Junyi Mao, Zhenxing Zhu, Tao Huang, Zhihai Zhao, Yongxiang Li, Lifeng Hu, Xiaojin Tang
Filed: 6 Sep 19
Utility
Upflow reactor
22 Aug 23
An upflow reactor (1), includes a housing (20), a catalyst bed layer (30) and a pressing device (10).
Minghua Guan, Xiuna Yang, Zonglin Ruan, Haochen Wang, Yang Jiang, Guoying Cui, Jiawen Zhou
Filed: 30 Dec 19
Utility
Method for separating aromatic hydrocarbon using extractive distillation
22 Aug 23
A method for separating aromatic hydrocarbons by an extractive distillation, comprising introducing a hydrocarbon mixture containing aromatic hydrocarbons into the middle of an extractive distillation column (8); introducing an extraction solvent into the upper part of the extractive distillation column; after an extractive distillation, a raffinate containing benzene is discharged from the top of the column, wherein the benzene content is 3-40% by mass, and sent to the lower part of the extraction column (10); the extraction solvent is introduced to the upper part of the extraction column for a liquid-liquid extraction; a raffinate liquid free of aromatic hydrocarbons is discharged from the top of the extraction column; a rich solvent containing benzene is discharged from the bottom of the column and enters the upper-middle part of the extractive distillation column; the rich solvent obtained at the bottom of the extractive distillation column is sent to the solvent recovery column to separate the aromatic hydrocarbons and the solvent.
Longsheng Tian, Ming Zhao, Wencheng Tang, Siliang Gao, Nan Yang, Zhifeng Bian, Siyuan Qie
Filed: 30 Jan 19
Utility
Method for obtaining near-wellbore true borehole sigma and true formation sigma by using a nuclear logging tool during oil and gas exploration
22 Aug 23
A method for wireline or logging-while-drilling systems that uses pulsed neutron sources coupled to multiple dual-function radiation detectors of neutrons and gamma rays, as well as a non-transitory computer readable memory device that can distinguish using pulse shape discrimination techniques the neutrons from the gamma rays in order to measure thermal neutron time-decay signals and thermal neutron capture gamma ray time-decay signals that are later further process using the non-transitory computer readable memory device to obtain a borehole sigma and formation sigma that are not affected by near-wellbore environments.
Sheng Zhan, Jeremy Zhang
Filed: 31 Aug 21
Utility
Substituted saccharides or glycosides and use thereof in a drilling fluid composition
1 Aug 23
Zhonghua Wang, Xiqiang Si
Filed: 5 Jul 19
Utility
Computer-implemented method of using a non-transitory computer readable memory device with a pre programmed neural network and a trained neural network computer program product for obtaining a true borehole sigma and a true formation sigma
18 Jul 23
A computer-implemented method that uses a preprogrammed neural network and a trained neural network computer program product to predict and then compared borehole and formation sigmas, when using a pulse neutron source and at least three dual-function radiation detectors.
Sheng Zhan, Jeremy Zhang
Filed: 16 Sep 21